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ETRACS
DJ-UBS Commodity Index 2-4-6 Blended Futures (Ticker: BLND) Is the First
ETN Linked to the Second Generation of the Most Widely Followed
Commodities Index

UBS Investment Bank today announced the launch of the ETRACS
DJ-UBS Commodity Index 2-4-6 Blended Futures ETN (Ticker:
BLND), the first exchange-traded note linked to the next generation
of the DJ-UBS Commodity Index, one of the most widely followed,
diversified indexes of commodities futures prices.

BLND is linked to the Dow-Jones-UBS Commodity Index 2-4-6 Forward Blend
Total ReturnSM (Ticker: DJUF246T), an enhanced version of the
Dow-Jones-UBS Commodity Index. The Index is constructed as an
equally-weighted basket of the two-month, four-month and six-month
forward versions of the Dow Jones-UBS Commodity Index, providing
diversification across the commodity price curve of each of the 20
commodities that currently comprise the index.

By diversifying exposure across multiple commodity futures maturities,
the Index seeks to limit concentration at any one point on the
respective commodity futures price curve. Historically, including
exposure to longer-dated maturities has helped to mitigate the costs
associated with holding and rolling shorter-dated commodity futures
positions, commonly referred to as "negative roll yield."

"Negative roll yield adversely impacts returns on exchange-traded
products based on commodity futures positions," said Christopher
Yeagley, Managing Director and US Head of Equity Structured Products.
"The ETRACS DJ-UBS Commodity Index 2-4-6 Blended Futures ETN -
the first ETN based on the second generation of the benchmark Dow
Jones-UBS Commodity index - gives investors the opportunity to minimize
roll risk through its diversified exposure to the Index's longer dated
futures positions."

Exchange Traded Access Securities ETNs ("ETRACS ETNs"), are
exchange-traded notes, an innovative class of investment products
offering access to markets and strategies that may not be readily
available to investors, and offer unique diversification opportunities
in a number of different sectors. ETRACS ETNs may offer:

Access to asset classes with historically low correlations to more
traditional asset classes

Convenience of an exchange-traded security

Transparent exposure to a published index

ETRACS ETNs are senior unsecured notes issued by UBS AG ("UBS"), are
traded on NYSE Arca, and can be bought and sold through a broker or
financial advisor. An investment in ETRACS ETNs is subject to a
number of risks, including the risk of loss of some or all of the
investor's principal, and is subject to the creditworthiness of UBS. We
urge you to read the more detailed explanation of risks described under
"Risk Factors" in the prospectus supplement for the ETRACS ETN.

Note that not all commodity futures markets are subject to negative
roll yields at all times.The terms structure of such markets can
change over time.Commodities futures markets may trade in
contango, backwardation or both, resulting in negative roll yields,
positive roll yields or no roll yields at all.

There are 42 ETRACS ETNs:

ETRACS ETN Name

Ticker

Master Limited Partnerships

Alerian MLP Infrastructure

MLPI

2x Monthly Leveraged Long Alerian MLP Infrastructure

MLPL

1x Monthly Short Alerian MLP Infrastructure TR*

MLPS

Alerian Natural Gas MLP

MLPG

Wells Fargo MLP Index

MLPW

Business Development Companies

Wells Fargo Business Development Company Index

BDCS

2x Monthly Leveraged Wells Fargo Business Development Company Index

BDCL

Alpha Strategies

Long-Short S&P 500 VIX Futures

XVIX

Natural Gas Futures Contango ETN

GASZ

Oil Futures Contango ETN

OILZ

Hybrid

S&P 500 Gold Hedged

SPGH

Fisher-Gartman Risk On ETN

ONN

Fisher-Gartman Risk Off ETN

OFF

Commodities

CMCI TR

UCI

CMCI Agriculture TR

UAG

CMCI Energy TR

UBN

CMCI Food TR

FUD

CMCI Gold TR

UBG

CMCI Industrial Metals TR

UBM

CMCI Livestock TR

UBC

CMCI Long Platinum ER*

PTM

CMCI Short Platinum ER

PTD

CMCI Silver TR

USV

DJ-UBS Commodity Index TR

DJCI

Equities

Next Generation Internet ETN

EIPO

Monthly 2xLeveraged Next Generation Internet ETN

EIPL

Long ISE Solid State Drive Index

SSDD

2xLeveraged Long ISE Solid State Drive Index

SSDL

Monthly 2xLeveraged ISE Cloud Computing TR

LSKY

Volatility

Long-Short S&P 500 VIX Futures

XVIX

Long 1-Month S&P 500 VIX Futures

VXAA

Long 2-Month S&P 500 VIX Futures

VXBB

Long 3-Month S&P 500 VIX Futures

VXCC

Long 4-Month S&P 500 VIX Futures

VXDD

Long 5-Month S&P 500 VIX Futures

VXEE

Long 6-Month S&P 500 VIX Futures

VXFF

Short 1-Month S&P 500 VIX Futures

AAVX

Short 2-Month S&P 500 VIX Futures

BBVX

Short 3-Month S&P 500 VIX Futures

CCVX

Short 4-Month S&P 500 VIX Futures

DDVX

Short 5-Month S&P 500 VIX Futures

EEVX

Short 6-Month S&P 500 VIX Futures

FFVX

Income

Monthly Pay 2xLeveraged Dow Jones International Real Estate ETN

RWXL

Wells Fargo Business Development Company Index

BDCS

2xLeveraged Long Wells Fargo Business Development Company Index

BDCL

Alerian MLP Infrastructure Index

MLPI

2xMonthly Leveraged Long Alerian MLP Infrastructure Index

MLPL

Alerian Natural Gas MLP Index

MLPG

Wells Fargo MLP Index

MLPW

*TR=Total Return and ER=Excess Return

The contents of any website referred to in this communication are not
part of, or incorporated by reference in, this communication. UBS has
filed a registration statement (including a prospectus, as supplemented
by a prospectus supplement for the offerings of the ETRACS ETNs) with
the Securities and Exchange Commission (the "SEC") for the offerings to
which this communication relates. Before you invest, you should read
these documents and any other documents that UBS has filed with the SEC
for more complete information about UBS and the offering to which this
communication relates. You may get these documents for free by visiting
EDGAR on the SEC website at www.sec.gov.
Alternatively, you can request the prospectus and the applicable
prospectus supplement by calling toll-free (+1.877.387.2275). Futures
and futures options trading is speculative, involves a high degree of
risk and is not suitable for all investors. Past performance is not
necessarily indicative of future results.

The "Dow Jones Global ex-U.S. Select Real Estate Securities IndexSM"
is a product of Dow Jones Indexes, the marketing name and a licensed
trademark of CME Group Index Services LLC ("CME"), and has been licensed
for use. "Dow Jones®", "Dow Jones Global ex-U.S. Select Real Estate
Securities IndexSM" and "Dow Jones Indexes" are service marks
of Dow Jones Trademark Holdings, LLC ("Dow Jones") have been licensed to
CME and have been sublicensed for use for certain purposes by UBS AG.
The ETRACS Monthly Pay 2xLeveraged Dow Jones International Real Estate
ETN is not sponsored, endorsed, sold or promoted by Dow Jones, CME or
their respective affiliates. Dow Jones, CME and their respective
affiliates make no representation or warranty, express or implied, to
the owners of the ETRACS Monthly Pay 2xLeveraged Dow Jones International
Real Estate ETN or any member of the public regarding the advisability
of trading in the Product(s). Dow Jones', CME's and their respective
affiliates' only relationship to the Licensee is the licensing of
certain trademarks and trade names of Dow Jones and of the Dow Jones
Global ex-U.S. Select Real Estate Securities Index which is determined,
composed and calculated by CME without regard to UBS AG or the ETRACS
Monthly Pay 2xLeveraged Dow Jones International Real Estate ETN. Dow
Jones and CME have no obligation to take the needs of UBS AG or the
owners of the ETRACS Monthly Pay 2xLeveraged Dow Jones International
Real Estate ETN into consideration in determining, composing or
calculating "Dow Jones Global ex-U.S. Select Real Estate Securities IndexSM".
Dow Jones, CME and their respective affiliates are not responsible
for and have not participated in the determination of the timing of,
prices at, or quantities of the ETRACS Monthly Pay 2xLeveraged Dow Jones
International Real Estate ETN to be sold or in the determination or
calculation of the equation by which the ETRACS Monthly Pay 2xLeveraged
Dow Jones International Real Estate ETN are to be converted into cash.
Dow Jones, CME and their respective affiliates have no obligation or
liability in connection with the administration, marketing or trading of
the ETRACS Monthly Pay 2xLeveraged Dow Jones International Real Estate
ETN. Notwithstanding the foregoing, CME Group Inc. and its affiliates
may independently issue and/or sponsor financial products unrelated to
the ETRACS Monthly Pay 2xLeveraged Dow Jones International Real Estate
ETN currently being issued by UBS AG, but which may be similar to and
competitive with the ETRACS Monthly Pay 2xLeveraged Dow Jones
International Real Estate ETN. In addition, CME Group Inc. and its
affiliates may trade financial products which are linked to the
performance of the Dow Jones Global ex-U.S. Select Real Estate
Securities IndexSM. It is possible that this trading activity will
affect the value of the Dow Jones Global ex-U.S. Select Real Estate
Securities Index SM and ETRACS Monthly Pay 2xLeveraged Dow Jones
International Real Estate ETN.

DOW JONES, CME AND THEIR RESPECTIVE AFFILIATES DO NOT GUARANTEE THE
ACCURACY AND/OR THE COMPLETENESS OF THE DOW JONES GLOBAL EX-U.S. SELECT
REAL ESTATE SECURITIES INDEX OR ANY DATA INCLUDED THEREIN AND DOW JONES,
CME AND THEIR RESPECTIVE AFFILIATES SHALL HAVE NO LIABILITY FOR ANY
ERRORS, OMISSIONS, OR INTERRUPTIONS THEREIN. DOW JONES, CME AND THEIR
RESPECTIVE AFFILIATES MAKE NO WARRANTY, EXPRESS OR IMPLIED, AS TO
RESULTS TO BE OBTAINED BY UBS AG, OWNERS OF THE ETRACS MONTHLY PAY
2XLEVERAGED DOW JONES INTERNATIONAL REAL ESTATE ETN, OR ANY OTHER PERSON
OR ENTITY FROM THE USE OF THE DOW JONES GLOBAL EX-U.S. SELECT REAL
ESTATE SECURITIES INDEX OR ANY DATA INCLUDED THEREIN. DOW JONES, CME AND
THEIR RESPECTIVE AFFILIATES MAKE NO EXPRESS OR IMPLIED WARRANTIES, AND
EXPRESSLY DISCLAIM ALL WARRANTIES, OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE OR USE WITH RESPECT TO THE DOW JONES GLOBAL EX-U.S.
SELECT REAL ESTATE SECURITIES INDEX OR ANY DATA INCLUDED THEREIN.
WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL DOW JONES, CME
OR THEIR RESPECTIVE AFFILIATES HAVE ANY LIABILITY FOR ANY LOST PROFITS
OR INDIRECT, PUNITIVE, SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSSES, EVEN
IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES. THERE ARE NO THIRD PARTY
BENEFICIARIES OF ANY AGREEMENTS OR ARRANGEMENTS BETWEEN CME AND UBS AG,
OTHER THAN THE LICENSORS OF CME.

Other marks may be trademarks of their respective owners. All rights
reserved. UBS assumes sole responsibility for this marketing material,
which has not been reviewed by Bloomberg.

UBS is present in all major financial centers worldwide. It has offices
in over 50 countries, with about 37% of its employees working in the
Americas, 37% in Switzerland, 16% in the rest of Europe and 10% in Asia
Pacific. UBS employs about 65,000 people around the world. Its shares
are listed on the SIX Swiss Exchange and the New York Stock Exchange
(NYSE).